초록 ▼

A method of installing an electromagnetic sensor loop in a multiple lane highway for monitoring vehicle traffic which includes the steps of placing a test loop at a desired location in a highway traffic lane approximately centrally thereof and varying the lateral dimension of the test loop until the

A method of installing an electromagnetic sensor loop in a multiple lane highway for monitoring vehicle traffic which includes the steps of placing a test loop at a desired location in a highway traffic lane approximately centrally thereof and varying the lateral dimension of the test loop until the field strength generated thereby at the lane edge is such that the loop will reliably distinguish between a vehicle in the lane in question and a vehicle in the next adjacent lane.

대표청구항 ▼

A method of installing magnetic sensor loops in a multiple lane highway comprising the steps of (a) locating on the surface of a highway lane a test loop having contour which is adjustable in the plane of said surface, said test loop being of the type which detects proximity of an automotive vehicle

A method of installing magnetic sensor loops in a multiple lane highway comprising the steps of (a) locating on the surface of a highway lane a test loop having contour which is adjustable in the plane of said surface, said test loop being of the type which detects proximity of an automotive vehicle by a resulting variation in loop inductance, (c) varying the lateral contour of said test loop while maintaining a steady electrical signal therein until said test loop is responsive to an automotive vehicle substantially within said lane and is unresponsive to a said vehicle in the next-adjacent lane, and then (d) permanently installing a magnetic sensor loop in said lane at the location and adjusted contour of said test loop.